If the universe is expanding, and there is no "edge" then what is it expanding into? I read your linked article about the balloon very interesting. Also how can the universe be finite with no boundary? Finally, how can the universe be spatially infinite after the big bang? Wouldn't the...
What I mean is that the "edge" of the universe must have always been expanding faster than the speed of light because if it was expanding slower than the speed of light then a light source at the edge of the universe could "escape" the universe. Essentially, I am asking this. When the universe...
After some thinking, I have concluded that the expansion of the universe must have started at the speed of light or greater than the speed of light but not less than speed of light. I say this because if the expansion of the universe at the instant of the big bang was less than the speed of...